<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <link rel="stylesheet" href="1.css" />
    <title>Document</title>
    <style>
      article div:first-child {
        color: black;
      }
      article div:nth-child(3) {
        color: black;
      }
      article div:last-child {
        color: black;
      }
    </style>
  </head>
  <body>
    <h2>123</h2>
    <article>
      <h2>abc</h2>
      <div>1</div>
      <div>2</div>
      <div>3</div>
    </article>
  </body>
</html>
